Helen - 

I'm sorry, I should have posted an update. There was a line of code that was an edit for one of the checkout fields. When I removed it, the plugin started to work like magic. 

Lesson here is - ANY plugin, ANY piece of CSS, ANY piece of PHP that has anything to do with checkout, disable and try again. 

Thank you folks!

Oh I'm glad to hear that! Thank you very much for the update too — I've marked your reply as the Best Answer. This means sellers who might experience the same issue can read your lesson! 😀

I just started having the same issue yesterday. I have tried all the things listed on this forum but nothing is working. Is there any other fixes I should try?  Please help, I am at a loss. 

@shrooki and @STVDesigns 

Were you able to find a solution to this issue that could be shared with @theeccles? 

I had this issue quite a long time ago Isabelle and I cannot recall the outcome. Sorry for being unable to help others. Everything seems to be working properly now for me, thank goodness!

@theeccles have you had a chance to contact WooCommerce yet to see if they have any solutions?

Thanks @Woo_Phil, this is really helpful. I appreciate it! 

Ok, I have done all the diagnostic steps and am still getting a failure.   What do I do next?

In detail, I am getting this failure:

Error: Square was unable to complete the transaction. Please try again later or use another means of payment.

I am using WooCommerce + Square, I updated to PHP 7.2.13.  All plugins and WP are up to date. I made sure i had matching locations.  I disconnected and reconnected Square.  I disabled all plugins but Woo and Square.  I turned off my theme and changed it to a generic theme.  Each time I tried a transaction (sometimes with a valid card, other times with a non-valid card).

with a non valid card, it bounced (as expected) but with a valid card all it does is show the failure error as quoted above.

please what is the next step to diagnose and resolve this situation?

I appreciate all the support of others here - however this has been hours of investment in troubleshooting and it seems others have been able to solve this problem.

Hi @noreast - You will need to use a valid credit card for all tests, otherwise the card will be rejected as you mentioned.

Based on the steps you've taken, we'll need to have a look at your site to see what the issue may be. Could you please contact our WooCommerce team at > My Account > Tickets. You may need to create an account.  When opening the ticket, please make sure to select the Square plugin. Include a detailed message of the problem as well as a link to this forum post. We will be able to help you further there.

Any resolution to this issue. I am having the same issues.

Hey @306originals, if you haven't already please submit a ticket to WooCommerce Support directly so they can investigate this for you. 

@306originals please see the answers and troubleshooting steps that are already listed above in this thread.

I have WooCommerce Square plugin for my website's Ecommerce. I do not know if this is causing my issue where only 9 of 71 products on my site can be purchased. An error occurs saying to try another form of payment. But 9 products can be purchased without incident. 

I have a ticket# with WooCommerce support, but they have not responded to my inquiry as yet for help in resolving this issue.

Anyone who can advise or help me with this issue is greatly appreciated.

Thanks,

Sharon

@STVDesigns

We've definitely heard there are some syncing issues with WooCommerce and Intenvory syncing right now. Perhaps @Woo_Phil can help us with some insight.

Glad you have an open ticket with WooCommerce already, they do manage this integration.